There is a version of Windows 10 that comes without any ads, bloatware, or spyware. It’s called Windows 10 LTSC.

The full name is Windows 10 Enterprise LTSC (Long Term Servicing Channel). It’s a variant of the Enterprise edition and is the Windows 10 equivalent of Windows 7 Ultimate.
LTSC is:
• clean (no pre-installed non-removable junk “apps” and no ads),
• resource efficient (no Cortana and other background processes) and
• stable (no feature updates to break your computer – just security and bug fixes for 10 years).
It’s not actively advertised, Microsoft tries rather hard to make sure people don’t use it and Windows 10 fans will barrage you with marketing talking points about how awful and useless it is.
The business practices of windows as of lately are extremely anti-consumer (and many other companies too). Nobody should be forced to use an inferior product with bloatware you never asked for.